What about a contract signed between two parties (Tesla, TBC) in which TBC acquires some of Tesla's technology for a symbolic price? Would that have any problem?
Other Tesla shareholders could well have a problem with this, up to the point of suing Tesla management for it. Tesla management has a duty to make the deal with terms that are as beneficial to Tesla as possible, and if they breach that duty, the shareholders can sue them for the loss.
For the initial projects, it's possible that Tesla will license tech to TBC for a nominal price, because they can justify it as expanding the market -- if TBC is initially successful, it will greatly expand the market for that tech.
For the initial projects, it's possible that Tesla will license tech to TBC for a nominal price, because they can justify it as expanding the market -- if TBC is initially successful, it will greatly expand the market for that tech.